121616949-math.304 - 2 2.3.11 does not exist 2.3.12 √ 2...

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290 Appendix B Selected Answers 1.3.2. { x | x = - 1 } 1.3.3. { x | x = 1 and x = - 1 } 1.3.4. { x | x < 0 } 1.3.5. { x | x R } , i.e., all x 1.3.6. { x | x 0 } 1.3.7. { x | h - r x h + r } 1.3.8. { x | x 1 } 1.3.9. { x | - 1 / 3 < x < 1 / 3 } 1.3.10. { x | x 0 and x = 1 } 1.3.11. { x | x 0 and x = 1 } 1.3.12. R 1.3.13. { x | x 3 } , { x | x 0 } 1.3.14. A = x (500 - 2 x ), { x | 0 x 250 } 1.3.15. V = r (50 - πr 2 ), { r | 0 < r p 50 } 1.3.16. A = 2 πr 2 +2000 /r , { r | 0 < r < ∞} 2.1.1. - 5, - 2 . 47106145, - 2 . 4067927, - 2 . 400676, - 2 . 4 2.1.2. - 4 / 3, - 24 / 7, 7 / 24, 3 / 4 2.1.3. - 0 . 107526881, - 0 . 11074197, - 0 . 1110741, - 1 3(3 + Δ x ) - 1 9 2.1.4. 3 + 3Δ x + Δ x 2 1 + Δ x 3 2.1.5. 3 . 31, 3 . 003001, 3 . 0000, 3 + 3Δ x + Δ x 2 3 2.1.6. m 2.2.1. 10, 25 / 2, 20, 15, 25, 35. 2.2.2. 5, 4 . 1, 4 . 01, 4 . 001, 4 + Δ t 4 2.2.3. - 10 . 29, - 9 . 849, - 9 . 8049, - 9 . 8 - 4 . t → - 9 . 8 2.3.1. 7 2.3.2. 5 2.3.3. 0 2.3.4. undefined 2.3.5. 1 / 6 2.3.6. 0 2.3.7.
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Unformatted text preview: 2 2.3.11. does not exist 2.3.12. √ 2 2.3.13. 3 a 2 2.3.14. 512 2.3.15.-4 2.3.16. 2.3.18. (a) 8, (b) 6, (c) dne, (d)-2, (e)-1, (f) 8, (g) 7, (h) 6, (i) 3, (j)-3 / 2, (k) 6, (l) 2 2.4.1.-x/ √ 169-x 2 2.4.2.-9 . 8 t 2.4.3. 2 x + 1 /x 2 2.4.4. 2 ax + b 2.4.5. 3 x 2 3.1.1. 100 x 99 3.1.2.-100 x-101 3.1.3.-5 x-6 3.1.4. πx π-1 3.1.5. (3 / 4) x-1 / 4 3.1.6.-(9 / 7) x-16 / 7 3.1.7.-98 t/ 10,-98 / 10 3.2.1. 15 x 2 + 24 x 3.2.2.-20 x 4 + 6 x + 10 /x 3...
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